China Valves Manufacturer , Industrial Valves Supplier.

Raffinate,Corrosive attacks,Lethal media,Phosgene GAS, Isocyanate, Polyethylene etc services can be found in Chemical and Petrochemical plants.Hangna range of valves are used in petrochemical industry with varied pressure & temperature ratings.

Advanced production techniques and pipeline processes in oil & gas applications are creating a demand for not only a new way of operating, but reliable types of equipment and valves. Hangna range of valves are used in oil & gas industries with varied pressure & temperature ratings.

The valve industry is truly broad and diverse; valves are found in our homes, our offices, under our streets and in all our factories and plants.

Introduction—Seals in an Industrial ValveValve seals are a critical component in the overall development of a new valve. In addition, upgrading seals in an existing device with the properly selected retrofit has the potential to enhance valve life and performance while reducing leakage and mean time

After the valve is used for a long period of time, the sealing surfaces of the valve disc and the valve seat will wear out and the tightness will be reduced. Repair sealing surface is a large and important work. The main method of repair is grinding.

Several companies have evaluated current industry standards and have crafted testing protocols specific to their application requirements. However, as the industry moves forward, end users and valve manufacturers should consider using a standard that best fits their needs.

The screw threads of NRS gate valve lift the gate are exposed to fluid being controlled by the valve. This can cause problems if the fluids tend to foul the threads. So the non risint stem gate valve are usually on the clean liquid or gases.Rising stem gate valve have the threads external to the valve.

Mexico has fracked just a few test wells, while the U.S. has had nearly 2 million commercial ones. Mexico hasn’t yet produced shale gas, compared to the U.S., which now that the Anadarko play in Oklahoma has been added to the EIA’s Drilling Productivity Report on 7 shale plays is producing 60 Bcf/d

Velan Inc.'s wholly owned subsidiary located in Lucca, Italy, has been awarded important contracts for the supply of three different types of valves to MODEC Offshore Production Systems (Singapore) Pte. Ltd.Velan ABV signed contracts with MODEC for the supply of API 6D and API 6A valves.